248 lines
12 KiB
JSON
248 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-93239",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-17T16:02:15.095Z",
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"datePublished": "2026-09-24T15:34:27.219Z",
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"dateUpdated": "2026-10-30T12:36:29.121Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:36:29.121Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mm: Fix the lockless page-table walk in show_pte()\n\nshow_pte() walks page tables locklessly and can run with interrupts\nenabled. A concurrent teardown can free a table page while it is being\nwalked. It can also clear a parent entry after show_pte() checked it; the\nregular pXd_offset() helpers then reread the cleared entry and can derive a\nbogus lower-level pointer and fault again.\n\nUse the lockless offset helpers with the saved parent entries, as\ngup_fast() does, and pass the saved PMD to pte_offset_map().\n\nFor task page tables, arm64 selects MMU_GATHER_RCU_TABLE_FREE. Disable\nlocal interrupts around the walk to hold off RCU-deferred table frees and\nblock the tlb_remove_table_sync_one() IPI until the walk is finished.\n\nPlace the IRQ guard after the header print. This does not make the output a\nconsistent snapshot, but prevents the task page-table walk from\ndereferencing a released table page or deriving a pointer from a different\nparent value."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/arm64/mm/fault.c"
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],
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"versions": [
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "b8f06b73ad146d84a33c124563c93eeef4f5b674",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "b3535b6cb2c48f97b8c3378eb9ea12538425bf14",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "e1b06278a7e241da0cd3187871e67255f956d184",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "08d931a0a850ad16a64f2cd23a19f40795cdbdf7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "b28fe65a36b8209b6adcf2722c7ce974cf9ac8d1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "68cbd70795dd8c06e7ccdc4eb0b74c5b180076c3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "0f05d95b99164a9ccc4cf4a4920e0ff0228138ad",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1d18c47c735e8adfe531fc41fae31e98f86b68fe",
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"lessThan": "a77644d009dece1104b6fcc6e322b0e4503db0d6",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/arm64/mm/fault.c"
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],
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"versions": [
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{
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"version": "3.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.7",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.157",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.110",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.51",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.5",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "5.10.273"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "5.15.224"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "6.6.157"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "6.12.110"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "6.18.51"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "7.2.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.7",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b8f06b73ad146d84a33c124563c93eeef4f5b674"
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},
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{
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"url": "https://git.kernel.org/stable/c/b3535b6cb2c48f97b8c3378eb9ea12538425bf14"
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},
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{
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"url": "https://git.kernel.org/stable/c/e1b06278a7e241da0cd3187871e67255f956d184"
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},
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{
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"url": "https://git.kernel.org/stable/c/08d931a0a850ad16a64f2cd23a19f40795cdbdf7"
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},
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{
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"url": "https://git.kernel.org/stable/c/b28fe65a36b8209b6adcf2722c7ce974cf9ac8d1"
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},
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{
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"url": "https://git.kernel.org/stable/c/68cbd70795dd8c06e7ccdc4eb0b74c5b180076c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/0f05d95b99164a9ccc4cf4a4920e0ff0228138ad"
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},
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{
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"url": "https://git.kernel.org/stable/c/a77644d009dece1104b6fcc6e322b0e4503db0d6"
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}
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],
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"title": "arm64: mm: Fix the lockless page-table walk in show_pte()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |